Apparatus for tinning margins of black iron can body blanks



lAug.14,1945.y E, LA'XO, 2,382,236

` APPARATUS Fon '1111111116 meins 0F BLAcx noN' GAN BODY mmxs E. LAxo Aug. 14, 1945. 1

APARATUS TOR TINNING MARGINS OF BLACK IRON CAN BODY BLANKS 3 Sheets-Sheet `2 Filed J'une 19, 1944 QM. k h1 ,W H, 1

mrmlll E. LAXO A'ug. 14, 1945;

APPARATUS FOR TINNING` MARGIS OF BLACK IRON GAN BODY BLANKS' Filed June 19, 1944 3 SheetS-jSheet 3 structure,

Patented Aug. 14, 1945 Can Company; Inc.; j non orNew York' `The inventionvrelates generally to theartof can making and primarily seeks to provide a novel apparatus for tinning the marginal edge portions of can body blanks subsequently to be brought together in the formation of side seam structures, thereby to facilitate solder` lbonding of thes'de seams. "I In the manufacture of cans it is essential .that the body blanks be tinned" atleast over themarginal portions which areto be brought together in the formation of sideseams in order to assure the .efcient solder bonding ofthe i side seams, ,it

.being well knownrthat .the bonding solder will not l efficiently adhere tollthe black liron bodies without special treatment.A 'It is'desirabl'e also to prevent direct contact between foodstuffs :and beverages packaged in cans and the black iron inthe body This has been accomplished by overall tinning of the lbody blanks `from Which the can bodies are formed, but obviously 'the use of more tin than is absolutely essential is to be avoidedv during the existing tin shortage. It has `been found that satisfactory can bodies can be formed from blanks which are tinned at the marginal edges only, the remaining blank surfaces subsequently to `bexexposed 4to` foodstui` or beveragecontact beinggivenfa -protective coating of enamel, lacquer or `the like; Some materials 'not subject to contamination by direct contact with the black iron body metal canlbe packaged in cans made up yfrom blanks that have been 'tinned only along lthe marginal `edges intended eet f has lits lower;l portion iimmersedvin .th

Aflux supply, and cooperating applieatenrellieans `for distributing :molten Aitin f from fthe- ,supply-:to

the previously uxedlupperwand -lower lateral marginal edge portions loffthe` =-travelling `:,lolanks.

An object of theinventiongis -tozprovidean apparatus of the` character stated which 1 the lower roll of` each ,cooperatingapplica/tom roll or.` molten tin supplyioandxtbenupper rolliof, tbe set rests byxgravity onthellowerfrollwherrlno can bodyj blank ispassing between the rollsand is lifted-by each-passing blankzas `sit:Inovesgin;flux Aor molten tin receiving `contact doetweenflthe I cooperating rolls. o i. Another1 object i off/,the invention isnto rovide an apparatusnof `the `,character lstated infwhich lan apparatus `of the; icharat the upper roll of a set is mountedion-afpivotally supported arm sothat it can besvvung away-from fthe underlying cooperatingiroll i 2o Another object of` thepinvent is toiprovide an apparatus of the characterStatedzinuwheh the l rolls lof `a t set are 1 gear, coupled-to rotate Y in unison.

Another object `'of the invention provide tediiniwhch the lewerroll Oftyarset is iequi ne with-a'nange `which acts es amedgezgude fonthes. travelling een body*` blanke ,end alse as e 'means :for picking up ux or molten tin iron; tneeupplyiand ,applyi- Ming it totherupper-roll .insbe inl` turnwapplied thereby to" theV underlying" upper marginal edge portions ofthe travellinggblanks; f i

y A, Another object` of `the,zinve-:antion isftcr` provide to form the side seams,'the remainder of, .the

blanks being devoid of special protectivecoating. The present invention has to do with novel apparatus for applying tin'only to themarginal edge portions of thecan body blanks which are to be 'formed into side seams in the making up of the can bodies. The ybody blanks may or maynot ginal tinning according to'the particular use to which the cans to'be made therefrom are to be put.

In its more detailed nature the inventionvreysides `in providing a novel can body blank edge tinning apparatus including supporting means over which the can body blanks are conveyed in processional order l with Atheir lateral marginal 'edge portions extended beyond ,the `supporting `means, a vflux supply disposed at each` side of lthe supporting means, cooperating applicator` roll means for distributingflux'` 'from' the supply to upper and lower' lateral marginal edge portions of the travelling blanks, fa molten. tin supply'at be given a protectivecoating other than the ma'rp i y Still: another object of y ,tire invention is; to .vide an apparatus offthewharacterstated in `which thezsuppertinc .means lincludes two-longitudinal@ parallel spaced supportrailsr-.iand `:two transverse sets o f fparallelq-spacedsupport g memfbers rigidly attached; te said; reilsnthererfbeng .a 1111K` reservoir andren; applicator rollfzsetaileaeh will hereinafter appear, :the nature o an `apparatus nof the; character :statediin which `the lower roll of a Set is;formedfiso'rthatits-guide flange merges through ai wellmroundedsheulder surface into an inwardly tapered extension so` as picked upby said extensienionteithe guide flange and applicator surfacegofgthelovveigroll.H y

f prend between one wsetof saidtransversesupport members and a `molten tinl reservoir and; an `ap- -iplicatoryroll setatveachendbetw n he other `set ofsaid transverse supportmembers :il that t. l, Vel).- tion will be 4more clearly understodbygreference Withthe above.` andotber "objects in veach` side of `the supporting means .beyond Vthe to the following ,detailed descriptionythegap- Figureff ijarfvetiolrcoss setin'g taken on the line 3-3 onFigurel.

Figure 4 is a vertical longitudinal section taken on the line 4-4 on Figure 1.

Figure 5 is a aeten verneairengituai-nsi secties; f

taken on the line 5-5 in Figure lis Figure 6 is a detail vertical longitudinal section taken on the line 6-6 on Figure 7 isk an enlarged fragmentary sectional" View illustrating the cooperative engagement of the hubs and be guided by the vertical ange or shoulder portions 25 in the manner clearly illustrated in Figure 2. Each cylindrifcrm applicator hub 26 is opposed by the cylindriform periphery of an applicator disk 21 secured on an inner end of shaft 28 and rotatably mounted in a bearing 29., Each bearing 29 is carried at the end of arms en which` @are secured te a 'snaftfsl roekemy mounted in bearings 32 a't the upper ends of the previously mentioned brackets I8. It will be apparent by reference to Figures 1, 4 and 5 of the drawings 'that 'the pivoted arm support for the t swing said upperapplicator rolls away from the an upper and lower applicaitrrollset =`a` Y marginal edge portion of a blank being ,fed theregbetween.

"the apparatus .herein disclosed as'an VeXlain-'rple '.'o'f embodiment or (the retention. .there `is xcursed a pair of :loe'gtudinarsupsort rails 5 :arranged en parallel `*spaced relation yas sho'lwnfn .F.igures:1.,;2 and. 3. lnach rai-1. l5 has Iside pieces t seliedlprigltly 'to opposite ledges thereof., -s'o fafs ltd form falg'lide: 'tro'gh i`n J'Jtlfii'chv to receive a 1mg-ht L-.cnvyt'ir chain 11:. fit lb'e'v'hig `anderst()'o'cl that fthe l"conveyor -fchainf nights. illustrated 'inl the '-are butlportions 'of-*endless 'conveyor 'chains'. l The chains -1 are'pi'ovided withlateralrly aligned. feqtdistantly' `spaced .conveyor flugs '8 which serveto .convey can 'body l'blanks .9 in Sprocessional order with lateral marginal edge iper tior'i'sthereof feXtehdi-*h'g ibeyond fthe Ilongttdinal xsur'il'iort's 6 -the mar-mer i'c'learly illustrated Figures-'li-Zfand ofthe drawings. .Y 1

- 'Twfrbss lbars i0 fare' provided and :are disposed in. paralletfspaced relation transversely of longitudineiisupports. 5. s the manner Kclearly. lilliistratedfin #Figures '1, 12, di 1and l5, said fbalis-bihg rigidly fseur'edias atJI beneath the rails 5 with spacer blocks l2 interposed between fthe Ikloarsfand said ir'ail's. l'Bet'fwfeenftl-ie bars CM land :side therec'fssmounted fa flax reservoir 1a. lEseh .reservoir is-lrece'ssedffat .its si'deifa'ees vfes-at am te y LIt #win-:be cbsrvealbyfrsference :te Figuren that the cylnd-rlforni narrates-(cf. ltn'e (nuns '-26 are disposed fat ithed'evel'fl the Iclanlbcdy 'Blank "supporting 'surfaces' ofthe' liongitudinal'preeest r`so '-that 'the lateral linargin'all xedge lponiion'siofftne conveyed blanks Will extendfverfndengagiwith underlying applicator roll hub portions 26. In orderftocause 'the cooperating upper and lower applicator rolls 21, 26 to rotate in unison, each "upper eispiieatorrou shaft 28 is equipped with e spur gear 33 disposed to intermesh with the spur ygear"22 lixed on the outer end of the lower rotor slfiaftrl.k y: `Two cross bars 34 :are'secured in .parallel spaced vrelation beneath the ,longitudinal-members -5'6 in the *n'i'ainrrer clearlyV illustrated tin'Fignres l and 3 ofthe drawings, .the rigid A.fsr-:crrl'fing of said bars fbe'ing electedthrcugh the medium of 'screws 35 and spacer blocks 36 as in the case of the .pre- *.v'ioiusly mentioned hars lift). `Between the bars 34 alt rnach sid-e of theilbnfgitudina'l .members 5, lli there is mounted sa molten tin reservoir1 v3-1. -One eoffthe bars '3'4 dits into recess 38 for-'med in mount- `ling brackets l39 .which 'are screwfsecure'd as .at 4D tol oiietace iof the. mespectineireservoir F35| in the .manner tclearly. illustrated in Figures Fl and 6, isai'd hearing being clamped iinI the. bracket `recess lthrough the meditnn of. overhanging, :screw seduredlplats v41. 'The bar 84 Iin the other `side lof the deservoirl vis mounted in recesses 42 formed .irl brackets. fwhioh are screw secured 1as .at YM 'to the .fadaoentrsrde .face fof 'the reservoir 3J, the .fbarlbeing -nlarnped'ifnfsaid recesses by .screw -se- 'icured overfhangimgpl-ates .f4-5. The upper ends vof the brackets' 43 are provided with rocker shaft hearings l#tithe pnrpose of which will presently 'vloecme apparent.

v The reservoirs 3;1 .may :be lprcw'id-ed 'withfdepend- Singxslcirts fr! into heat-may :be directed trom'arny .suitable source g(not shown) in .order -to maintain tlreftin in l.the .reservoir lln 1a molten st'ate.' .Ea'c'h reservoir: 321 provided with :a llong A.hearing id'B. A shaft 49 `tis.rotatably mounted -in ach: hearing l118 #and feach shaft 49 thas fa spur gear 50 med itc :its `outer fendfandr-an inwardly .'bevelled :applicator'roli `5l ked to its :inner en'd -inp`ositon for .rotating :in 'the rhousing tpartially immersed inmolten *tinytherein- :It 'will be ob- .served hy referencetoFig'ures. f1 iarzdf of thexdraw- .ings fthartlfthe inwardly tapered por-.tion fof -each ll'ower applicator roll l5 lmerges 'through la well rounded terminus into wavvertlcal .guide and ap- .plicator'i-flangeor shouldemportion 52 which .forms the louter limit yof :afcylindriform,applicator hub portion 53 disposed at the same level as the previously yme'rrtion'ed 'applicatorrhubs 216 .and `in 1p osi- ?tin rior erfgagfng runderfthe v:laterally extended edge extremities of the-conveyed body blanks 9 :in "the manner :clearly illustrated ein Figure 2.

PLEachlower .applicator `rfo'll hubportion 253 is opposed bythe :cylindrform applicator -:surface -of aan vupper .applicatorfdisk 5t `.having an` inwardly disposed.' het/felled face 55 and secured on Athe in- ?ner lend fof ia shaft 56 'which ls.` rotatable -in a bear- .fmg 55:1.. Each bearing V51.1is'canried at the freefend fofiarfms which-are securedtoza rockershaft-SS .rro'ckably cnounter inxthe previously mentioned flippery applicator rolls 21 make it possible tobracket bearings Ali.v A spur gear is secured-cn theouterend of eachshaft 56.y in position forfintermeshing` with. the. underlying lower applicator roll gear 50i.l Thepivotal mountingy of thev arms 58 make it possible to swing the upper applicator rolls 54 awayfrom the underlying applicator hubs 53 wheneverdesired." '1 l It will be obvious thatas can bodyblanks are conveyed in processional 'order over the longitudinal SuppOrtLmembers ,-6` ini themanner clearly illustrated in Figuresy 1, 2, 3 and 4, the lateraledge extremities of the blanks will rst engage between theupper andlower v'applicator-1 roll sets2621, the lowerhubs 216 serving towapply; stripes of ilux along the undersurface ofthe blanks at the `,marginal edgeswthereof, land' .thequpper `applicator rolls 21. serving to similarly apply the` flux stripes to the upper surface Aofsaid marginal edge portions. By reason ofthe inward, tapering .ofythe applicator rolls ,23 and the 'well'.,rounding of the u inner V.extremities thereof-as at 2,4 the `flux picked up by the roll will Vflow smoothly` onto `the upright wall 2-5 ofy each roll andbe applied to the contacting upperfapplicatorroll 2'l.` The flux. is directly applied tothe Cylindriform; hub portions 25.` The upright roll flanges` or guide wallportions 25 vof the lower applicator rolls 23 'serve as an edge guide for the can body blanks!! in addition toapplylng flux to the upper applicator rolls,21 in the manner stated.y -Itwill also ,be obvious that the inwardtaper ofthe rolls y23. andthe well rounded surface 24 :thereofalso will serve to engage and properly align any blanks ill which ymight be moving along out4 ofqproper alignment on` the conveyor chains, 8.-

It will be obvious that per and lowerapplicator roll sets 54, 5I whichcooperate withthemolten tin reservoirs 31 will apply the molten tin in the form of marginal stripes to the previously fluxed, upper and lower marginal 1 and the different ,widths ofen gaging portions thereof in the finished seam structures, itis desirable that tin stripes offvaried widths be applied to the can `body blanks so as to assure the desired efficient solder lbonding of the side seams in the completion of the can bodies. The reason for this variationin width of the appliedtin stripes, and the specic relationof saidstripes `is disclosed in detailin mycopending application for U.` S. Letter Patent 4Serial No. 541,088

`i'lled June 19, 1944, and further detailed description of this arrangement of striping is thought to be unnecessary in this disclosure.-y It will be apparent, however, by reference Vto Figures 2 and 3 of the drawings that the upper applicator r`oll5llj at the right in Figure 3 willapply the narrowest tin stripe, the upper applicator roll 54 at the left in Figure 3 will apply a wider tin l stripe, theflowerapplicator roll hub portion 53 at the left in Figure 3'will apply the next widest Atinstripe, and the lower applicator roll hub portion53 at the right in Figure 3 will apply the widest'tin stripe` rIhe flux Aapplicator roll sets bearthelsamerelation,` as will be apparent by reference to Figure 2. u r l i 'j While oneform of the invention has been the `similarly related upl shown for purposes of illustration, it is` tobe clearly understood that `various changes in the details of construction and arrangement ofparts may be made without departing from the spirit and scope of the invention as dened inthe appended claims. l

Iclaimz" d ,i n a i 1. InI apparatus of the character described, can body blank supporting means, means for conveying blanks over the supporting meansin processional order with marginal edge portions thereof extended laterally beyond the supporting means, ux supply means supported adjacent said marginal edge portions, cooperating applicatorroll means disposed at each J side of? said supporting means and effective to distributeflux from .the flux supplymeans to upperl andlower surfaces ofthe laterally extended blankmarginal edge portions, molten tin supply means supported adjacent said marginal edge portions, and' cooperating applicator roll means disposed ateach side of saidasupporting` means and effective `to distribute molten tin fromthe molten tin supply means to the previously 4iluxed upper and lower surfaces of the laterally extended blank marginal edge portions. l 2. In apparatus of the character described, in combination with means lfor conveying can body blanks in Aprocessional order `with lateral edge portions of the blanks projecting free ofthe conveyi'ngy means, meansI for applying molten tin fto upper and lower surfaces of the' blanks at fone lateral edge portion thereof comprising, 'a .reservoir adapted to contain `al supplyof molten tin, an applicator roll rotatable in the. reservoir and in position for being partially immersed in molten tin therein, 'saidroll' having a cylindriform applicator hub engageable` withthe under surfaces of conveyed blanks,a second applicator roll having acylindriform periphery opposedto saidhub in position for engaging the upperlsurfacesz of the y blanks, andmeans swingably mounting the sec*- ondfapplicator roll for movement away from the first mentioned applicator roll. f i g r f 3. In apparatus of the character described,in

, combination with means for conveying` can body blanks `in processional order-withlateral edge portions of the blanks projecting free ofthe con-I veying meansmeans for applying molten tin to upper and "lower surfaces of the blanks atone lateral edge portion thereofv eomprisinga1res`rvoir adapted to contain a supply of molten tin, an applicator roll rotatable in thel reservoirand in 4positionfor being' partially immersedin molten tin therein, said roll having a cylindriform applicator hub engageable with the under surfaces ofl conveyed blanks, and a second applicator roll having a cylindriformperiphery opposed tol said hub in position for engaging" the upper'surfaces of the'blanks, said rst mentioned roll having an outwardly extending angedisposed for acting asa `guide for thev lateral blank edge'portion being thinner and for engaging and applying moltentin lto'the second applicator roll. i

4; In apparatus of the character described, in combination with means for conveying can body blanks in processional order with lateral `edge portions of the blanks projecting free of theconveying means, means for applying molten tinto upper-and `lower surfaceslof the blanksv at-one lateral edge portion thereofcomprising, areservoir adapted to contain a supply of molten tin, an applicator roll rotatable inthe reservoir and in ,positionfor being partially immersed in molten -tin therein, said roll having a cylindrifonn applicator hub v'engageable with the under .surfaces-'.nf conveyed blanksfanda .second applica* tor.rr.o1l.:having a 'cylindriform periphery opposed to-.saidhufbr in position' for engaging.:they vupper .surfaces 1 of theiblanks, said 4iirst: mentioned :roll

` y5. Inf apparatus of the character described; .can l body :blank .supportingmeans including two longiitudinal. .parallel spacedlsupport rails, means .for conveying. :blanks over-.said rails'in processional order. with fm-arginaledge portions-'thereof .extended laterally .beyond said rail-s, twotransverse sets of parallel :spaced: support members rigidly attached .to said rails, a reservoir for flux andan applicator roll' set atleachend between one -setof said transversefrsupport members, said roll. sets being: adapted to distribute flux .from said reservoirs to upper and lower surfaces of the-,laterally extended blank.'V marginal fedgeportions, and a reservoir formolten tin and an applicator roll set at eaohfend between the other set ofsaidtransversessupportnmembers, said last mentioned roll sets being adapted to distribute molten tin from said ,iast mentioned reservoirs to .the previously uxed upper and mwen-surfaces .of thelaterally extended `blank marginaliiedge portions. H

being 'adapted to distribute ilux from said reserr' voirs to upper and lower surfaces of the laterally extended blank marginal edge portions, :and a reservoir for molten ,tinand an applicator roll set; at each end between the. other` set of .said

transverse support members, said last mentioned roll sets being adapted todistribute molten itin fronrsaidlast mentioned reservoirs to thepreviously. fluxeduppel and :'lowersurf aces vof the later,-l ally.;extended blank marginal edge portions, each said roll set ,including fa iovvery roll adapted tonhave itslower portion immersed in or molten tin in the Irespective reservoir and an upper f, roll :disposed to rest by gravityon :saidlower rollywhen n0. .Gan-body blank; ispassing between; the rolls ofV theset and to be. lifted by Veacl'ipassing.blank as it Ymoves in or molten f tin. receiving conta-ct between the rolls nfsaid set.

f t '.ZrrIfn apparatusv of thecharacterzdescribed, can body blank .supporting yrneans vincluding two= longitudinal parallel spaced support rails, means for conveying. blanks over said .rails in processional order withgmarginal -edge .portionsthereof ex-v tended` laterally beyond said f rails,; two, trans.- verse sets-:ofparallel spaced :support-members rigidly attached to said rails, a resenvoirfor flux and an applicator .-roll set at each fend `between one s et fof said :transverse :support members, said roll sets-being adapted to distribute ux. fromsaid reservoirs .tonpper and lower..suriaces ..iof .the

and-a. reservoir for molten tin and .an applicator roll set at each end 'betweenfthe other set of said transverse Asupport members, :said last Vmentioned eroll .sets being `adapted to distribute. molten tin `from .said last mentioned reservoirs .to the pre- 'viously'fluxed upper-"and lowerfsurfaces of the laterally extended blank marginal edge portions, each .said i.roll :set including alower roll adapted to have its lower portion immersed in flux or molten tin in the respective reservoir and an upper Aroll ldispcsedto .rest by gravity on said Ilower roll when 4no can body vblank is passing between .the .rolls of the set and to lbe lifted by each passing blank as it moves in ux or molten tin receiving contact betweenthe'rolls of said-set, and each said upper; roll being mounted on-apivotally supported arm so that it can be swung away from the underlying cooperating roll. v

8. In apparatus of the character described, can lbody blanksupporting means including two longitudinal parallel spaced support rails,v means for 'conveying blanks over said rails in processiona'l order with marginal edge portions thereof extended laterally" beyond saidrails, two .transverse Asets ot parallel spaced support `members rigidly attached to said rails, aqeservoir for iiux and an applicator-roll setat each en'd between one set of said transverse ysupport 'memberssaid roll sets being adapted todis'tri'bute liiux from said reservoirs to upperand lower' surfaces ofthe laterally extended blank marginal edgeportions; and a reservoir for ymolten tin andan applicator roll set at each' end between the y.other set of said transverse supportv members, said last mentioned roll sets being adapted to distribute molten tin from said last mentioned reservoirs tothe previously fluxed upper and lower surfaces of the laterally extended blank marginal edgeportions, each said roll set including 'a lower-roll .adapted to have its-lower portion immersed ux or molten tin in the respective -reservoirand an upper roll disposed to rest by gravity on said lower roll when no can body blank is passing between the 'rolls of the set and 'to be lifted 'by each passing blank as it; moves in-iiux or Imolten tin receiving contact between the rolls ofsaid set, and the rolls of each said applicator roll set being r'gear coupled to rotate in'unisoni 9. In apparatus of the' character described, can body blank supporting means' including vtwo longitudinal parallel spaced support' rails, means for 'conveying yblanks over -said 'rails' in processional vorder" with marginal edge portions thereof extended laterally beyond s'aid rails, two transversevsets -of vparallel spacedsupport xmem-bers rigidly lattached -to said rails, 'a reservoir for ux and-an :applicator'roll set at each end between one set of saidA transverse support members, said roll Asetsbeing-adapted to distribute vflux from said reservoirs tto upper and lower surfaces ofthe laterally extended blank marginal edge' portions, zand 1a reservoir for molten ltin and'A an :applicator rollfset at each Lend between the other set of said transverse 'support members, .said 'last mentioned roll `-sets :being adapted to distribute molten tin rsaid last mentioned reservoirs to the .previously ,fluxed 7upper and lower surfaces of the laterally .extended 'blank marginal edge portions, .each said ,roll setincluding -a lower roll adapted .to-have its lower portionA -immersedinfiux or molten the respective reservoir andan :upper roll vdisposedto rest ,byjgravityonsaid lower yroll when no :can fbod-y blank is 'passing-between the rolls of the set and to be lifted byseach passlaterailyzpxtendedf blank marginal ledge portions 715 ing blank as moves .-in rflux ormolten .tin .receiving contact between the rolls of said set, and the lower roll of each said applicator roll set having a flange thereon which acts as an edge guide for the travelling can body blanks and also as a means adapted for picking up ux or molten tin from the respective reservoir and applying it to` the cooperating upper roll to be in turn applied thereby to the underlying upper marginal edge portions of the travelling blanks. g

10. In apparatus of the character described, canbody blank supporting means including two longitudinal parallel spaced support rails, means for conveying blanks over said rails in processional order with marginal edge portions thereof extended laterally beyond said rails, two trans- Verse sets of parallel spaced support members rigidly attached to said rails, a reservoir for flux and an applicator roll set at each end between one set of said transverse support members, said roll sets being adapted to distribute flux from said reservoirs to upper and lower surfaces of the laterally extended blank marginal edge portions, and a reservoir for molten tin andan applicator roll set at each end between the other set of said transverse support members, said last mentioned roll sets being adapted to distribute molten tin from said last mentioned reservoirs to the previously fluxed upper and lower surfaces of the laterally extended blank marginal edge portions, each said roll set including a lower roll adapted to have its lower portion immersed in ilux or molten tin in the respective reservoir and an upper roll disposed to rest by gravity on said lower roll when no can body blank is passing between the rolls of the set and to be lifted by each passing blank as it moves in ilux or molten tin receiving contact between the rolls of said set, and the lower roll of each said applicator roll set having a flange thereon which acts as an edge guide for the travelling can body blanks and also as a means adapted for picking up ilux or molten tin from the respective reservoir and applying it tothe cooperating upper roll to be in turn applied thereby to the underlying upper marginal edge portions of the travelling blanks, and each said ilange merging through a well rounded shoulder surface into an inwardly tapered extension adapted `to assure smooth flowing of flux or molten tin picked up from the respective reservoir by said extension onto said guide and applicator flange.

ED LAXO. 

